ENERWAVE ZWN-RSM2 Z-Wave Smart Dual Relay Switch Module, NEUTRAL WIRING REQUIRED Upgrade Existing Wall Switches into a Z-Wave Switch so you can Still Keep the Original Switch and Wall Plate. The Switch Will Become Controllable Through the Z-Wave Relay and Your Z-Wave Gateway. Wirelessly Switch your Devices (Lights, Fans) ON / OFF from Smart Phone Applications, Any Web Browser from Any PC or Mac, or Internet Connected Tablet The ON / OFF Control of the Connected Load can be Programmed into Z-Wave Scenes, with Dynamic Scheduling and Events from Anywhere The ZWN-RSM2 Acts as a Z-Wave Repeater to Extend the Range of your Z-Wave Signal up to 100ft; The Switch will Still Work if the Module Fails NEUTRAL WIRING REQUIRED, Single Pole, 120-277 VAC, 50/60Hz, Up to 100ft Range, 20,000mA (20A) Maximum Load (10,000mA | 10A per Load x2), 908.42MHz, Slim Design - Dimensions: 2.02" x 1.71" x 0.82"